To ensure that the Mixed Cart warning only displays on the cart page, please follow the steps below:

1. In the Shopify Admin, go to Sales Channel -> Online Store -> Themes.

2. Click the three dots or more options.

3. Select "Edit code."

4. Edit the theme.liquid file by clicking the pencil button.

5. Scroll down and look for the </head> tag or use the find feature(Ctrl + F for PC or Command + F for Mac).

6. Add the following code before the </head> tag:

{% if template contains 'index' or template contains 'collection' or template == "product" %}
    <style>
        #pn-mixed-cart-warning{
            display: none !important;
        }
    </style>
{% endif %}

7. Click the Save button.

If you have any other questions, please don't hesitate to let us know!